there is no way to pass a path to a kernel file to reboot to with
fshalt.

reboot(8) does not halt filesystems.

discussion:

Sep 23, 2014
Project Member #1 cinap_le…@[REDACTED]
you’d need to copy the kernel to ramfs as well in fshalt.
you can’t just run reboot after halting the fileserver.
this is a feature request, so changing label.
Labels: -Type-FrontFellOff Type-BlackjackAndHookers